Warp-stop-motion mechanism for looms.



No. 794,917. PATENTED JULY 18. 1905. A. E. BENSON.

WARP STOP MOTION MECHANISM FOR LOOMS. APPLIOATION FILED MAR.1, 1905.

NITED STATES ARTHUR E.

DRAPER COMPANY, OF HOPEDALE,

RATION OF MAINE.

Patented July 18, 1905.

PATENT rrron MASSACHUSETTS, A CORPO- WARP-STOP-MOTION MECHANISM FOR LOOIVIS.

S C F TI N forming part of Letters Patent No. 794,917, dated July 18, 1905.

Application filed March 1, 1905. Serial No. 247,839.

To all whmn 111; may concern.-

Be it known that I, ARTHUR E. BENSON, a citizen of the United States, and a resident of Hopedale, in the county of Worcester and State of Massachusetts, have invented an Improvement in Warp-Stop-Motion Mechanism for Looms, 01" which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates more particularly to that type of 'warp-stop-motion mechanism wherein stop motion controlling detectors, each controlled or governed by a single Warpthread, are arranged in two parallel banks or series, a released detector in either bank coopcrating with and arresting a vibrating feeler to effect through such arrest the stoppage of the loom automatically. As the loom may be stopped for various abnormal conditions of warp or filling or through improper positioning of the shuttle, it is of importance to notify the weaver when the stoppage is due to warpfailure and at the same time to indicate at a glance in such case in which of the two banks of detectors the released detector is located, so that it may be readily found and the fault corrected.

My present invention has for its object the production of means to indicate automatically to the weaver in which bank the released detector is located, and I have so constructed and arranged the apparatus that by a simple manual operation the weaver can quickly locate in its particular bank the position of the released detector.

The novel features of my invention will be fully described in the subjoined specification, and particularly pointed out in the following claims.

Figure 1 is a transverse sectional view of a sufiicient portion of a loom to be understood, provided with a single-thread warp-stop-motion mechanism of the type hereinbefore referred to. Fig. 2 is a partial front elevation,

enlarged, of the stop motion mechanism, showing the indicating means, areleased detector being shown in the rear bank; and

Fig. 3 is a sectional view thereof on the line 3 3, Fig. 2, looking toward the left.

In the drawings, Fig. 1, the stop-motioncontrolling detectors cl d arranged in parallel banks and slotted longitudinally to receive the transverse supports (Z attached at their ends to brackets, as B, bolted to stands a on the loom sides, the back-stops B and E the separator B between the detectors and also serving as a warp-rest, each detector being governed by a single warp-thread, and the feelerf rigidly connected by arms f with a rock-shaft F, located below the detectors, may be and are all substantially of well-known construction. The means for effecting the normal vibration of the feeler and for efiecting the release of the shipper S form no part of my present invention; but they may be conveniently such as shown in United States Patcnt to Stimpson, No. 673,824, dated May 7, 1901. Of such means I have shown only the upper ends of the links it" and it the former pivotally connected with an arm loosely mounted on the rock-shaft F and normally turning the same by or through the spring 3, Fig. 2, as in said patent, the link its being pivotally connected with an arm f fixedly secured to the rock-shaft.

A bracket 1 is bolted to the back rests B B substantially midway between the end brackets B, its upper edge being notched toreceive the supports (Z and sustain them at their centers, the bracket 1 being extended parallel to the travel of the warp-threads and rising above them.

At the rear edge of the bracket 1 a horizontal extension 2 is provided (see Figs. 1 and 2) having a slot 3, which forms a guide for an upright and vertically-movable signal or indicator (shown as a rod 4:) having its upper end enlarged, as at 5, and at its lower end pivotally connected with an arm 6, fast on the feeler rock-shaft F. As the feelerf vibrates, the arm 6 will cause the signal to rise and fall, and the position of the end 5 with relation to the top of bracket 1 indicates whether the feeler has been arrested by a released detector in the front or the rear bank.

Referring to Fig. 3, I have shown the feeler in engagement with one of the detectors (Z in the rear bank, and it will be noticed that the signal or indicator 5 is visible above the top of the bracket 1, thereby notifying the weaver that the released detector is in the rear bank. If the released detector had been in the front bank, the forward movement of the feeler would have been arrested and the arm 6 would have been held down, lowering the signal 5 into dotted-line position, Fig. 3, below the top of the bracket 1. The weaver would then know that the released detector would be in the front bank.

The signal-rod I is passed up through the sheet of warp, as shown, and it is reciprocated by the vibrations of the feeler.

While the automatic indication of the location of the released detector in the front or rear bank is of great assistance, such detector must be found after its bank has been-indicated,and by a man ual operation of the indicating means this is readily effected. Referring to Fig. 3, wherein the released detector is in the rear bank, the weaver will press down upon the signal-rod 4 by grasping the enlarged end or signal 5, and thereby the feeler will be pressed against the released detector, holding it firmly in place. The weaver then draws the other hand over the detectors of the rear bank and will instantly detect the released one by its rigidity compared with the loose or free movement of the others as the fingers are swept across them. If the released detector is in the front bank, then the weaver lifts the rod 4 to hold the detector fixedly, and it is located by passing the fingers over the front bank, as has been described.

Where a very large number of detectors are employed in each bank, it is sometimes quite difficult to find the released detector; but by the means hereinbefore described it can be located almost instantly.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a loom, in combination, two banks of stopmotion-controlling detectors each governed by a single warp-thread, a vibrating feeler to engage and be arrested bya released detector in either bank, arrest of the feeler being adapted to effect the operation of loomstopping means, a visual signal located behind the banks of detectors, a fixed. member adjacent the signal, and a connection between the signal and the feeler to vary the position of the signal with relation to the fixed member and thereby indicate in which bank the released detector is located.

2. In a loom, in combination, two banks of stop-motion-controlling detectors each governed by-a single warp-thread, transverse supports for and relatively to which the detectors have a limited vertical movement, a sus taming-bracket for the supports midway between the ends of the banks, a vibrating feeler to engage and be arrested by a released detector'in either bank, a vertically-movable visual signal located behind the said bracket, and an operating connection between the signal and the feeler, whereby stoppage of the signal above or below the top of the bracket indicates automatically arrest of the feeler by a released detector in the rear or front bank, respectively.

I 3. In a loom, in combination, two banks of stop-motion-controlling detectors each governed by a single warp-thread, a vibrating feeler to engage and be arrested bya released detector in either bank, arrest of the feeler being adapted to effect the operation of loomstopping means, and manually-operated means to quickly locate in its particular bank the position of the released detector.

4. In a loom, in combination, two banks of stop-motion-controlling detectors each governed by a single warp-thread, a vibrating feeler to engage and be arrested bya released detector in either bank, arrest of the feeler being adapted to effect the operation of loomstopping means, and means to indicate automatically the bank containing the released detector, said means being operative manually to enable the position of such detector in its particular bank to be found. I

5. In a loom, in combination, two banks of stop-motion-controlling detectors each governed by a single warp-thread, a vibrating feeler to engage and be arrested by a released detector in either bank, arrest of the feeler being adapted to effect the operation of loomstopping means, a visual signal, a fixed member adjacent the signal, and a connection between the signal and the feeler to vary the position of the signal with relation to the fixed member and thereby indicate in which bank the released detector is located.

6. In a loom, in combination, two banks of stop-motion-controlling detectors each gov erned by a single warp-thread, a vibrating feeler to engage and be arrested by a released detector in either bank, and manually-operated means, operatively connected with the feeler to cause the latter to press upon and hold in fixed position the released detector, whereby its location in the bank can be found quickly.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ARTHUR E. BENSON. Witnesses:

E. O. MeILwAIN, B. WIN. 

